The Trace Elliot AH600-12 Head is a 600W amplifier head that features our fully featured 12-band preamp section. This is the standard for professional bass players, with plenty of power for most applications and all the features that could be desired from a preamp, selectable and adjustable at will. The output stage can drive one of the large 4-ohm cabinets or any combination of two of the 8-ohm cabinets. 12-Band means more control, more sound and more power. There are six footswitchable features: Pre Shape for that classic Trace Elliot sound; Valve to add real tube warmth and overdrive; 12-band classic Trace Elliot Graphic Equalizer; Dual-Band Compressor with separate controls for high and low bands; sophisticated Effects Loop with High-Pass/Low-Pass/Full Range outputs, Left/Right/Mono returns, Series/Parallel switch and Loop level control; and an Output Mute that mutes all outputs except Tuner Out. Other features included are XLR DI outputs, line outputs and anti-clip circuitry incorporating a valve/tube.